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(No Model.)

G. W. JOHNSTON.

'TYPE WRITING MAGHIYNE.

No. 340,881. Patented Apr. 27, 1886.

UNITED STATES PATENT OFFIcE.

GEORGE \V. JOHNSTON, OF BOONVILLE, MISSOURI, ASSIGNOR OF ONE-HALF TO OOTAVIUS KNIGHT AND HARRY E. KNIGHT, BOTH OF XVASHINGTON,

DISTRICT OF COLUMBIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 340,881, dated April 27, 1886.

To aZZ whom it may concern.-

Be it known that I, GEORGE W. JOHNSTON, a citizen of the United States, residing at Boonville,'1'n the county of Cooper and State of Missouri, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

In operating the type-writer it is often de- Io sirablc to space between each two letters of a word instead of only between words. This is especially of need in entitling legal or other documents, the matter so spaced being rendered more prominent audlegible. Ordinarily such spacing is effected by depressing the ordinary spacing-key-between each two letters of the word; but this is more or less troublesome, and is apt, especially in rapid writing, to be irregularly done,with consequent greater or less unsightliness of the work.

My invention has therefore for its object the providing of means easily accessible for so changing and setting the amount of movement of the escapement as to enable it to feed the 2 5 paper-carriage for one, two, or other desired number of spaces regularly with each depression of a type-key.

My improvements as herein claimed are especially applicable to the ordinary Remington 3o type-writer; but they may be used 011 any form of machine having analogous feed mechanism.

My invention consists in the improvements hereinafter described, and pointed out in the claims.

Figure I represents a form of plate or blank which may be bent into the form of a bracket for myimproved stop. Fig. II is a rear elevation of the escapementpawls of a typewriter of the Remington pattern, and having 40 my improved stop applied, the stop being arranged in position to allow the movable pawl such a length of stroke as to skip each alternate tooth of the feedaack. Fig. III is a similar view of the same, the stop being ad justed so as to allow the pawl only one-half a stroke. Fig. 1V is a similar view, the pawlstop being, however, provided with an operating-rod. Fig. V is a perspective view show- Application filed September 28, 1885. Serial No. 178,434. (No model.)

'part of the typewriter being of well-known construction.

The terms fixed"andmovable as applied to the pawlsland 2, respectively, are used to distinguish them in regard to movementin or parallel with the plane of the feed-rack. They are of course understood to move together transversely of said rack.

3 may represent the bracket, which I prefer 6 5 to make out of a blank of the shape shown in Fig. I.

5 is the hole or slot whereby the bracket is attached to the fixed pawl 1 with the aid of screw 6.

7 is a second slot, wherein may be suspended the improved stop.

The blank shown in Fig. Iis bent rectangula-rly on the dotted lines, so as to assume the shape shown in the remaining figures of the 7 5 drawings. It will be observed that in the form shown in such last-mentioned figures an edge, 8, is provided for receiving the movable pawl 2 at thedesired limit of its stroke, and it would seem that by adj use ing such edge to and away from the fixed pawl by. means of the slot 5 and screw 6 the stroke of the pawl and consequent feed of the carriage could be varied at pleasure; but, as a matter of fact, the form of screw 85 used for this purpose is expressly made to enable the bracket to be fixed to a certain position and not subsequently moved, while if the screw were loosened and the bracket shifted outwardly there would not only be no support for the outer end of the bracket, so that it would turn down on the screw 6 as a pivot, but there would be no means, without much trouble, of determining when the proper point of adjustment had been reached to enable the 5 pawl to pass just one or more teeth of the 'rack. So I, when applying the bracket, ar-

Figs'. VI and VII I have shown the stop in the form of a slide capable of horizontal movement on the bracket. In this last case the sides of the bracket may be turned up, as shown at 10, to afford a dovetailed groove for guiding and retaining the slide.

Any preferred mechanism may be employed for retaining the stop 9 in any position to which it has been set." In Figs. VI and VII I have shown a spring, 11, whose nose or end bears upwardly through the bracket in any one of a series of notches or recesses of the under surface ofthe stop, so as to allow the stop to be forcibly shifted, while serving to retain it ordinarily. In Fig. III a spring, 11,

is also employed for fixing the stop at one or other position, being for this purpose provided with bends or hollows 11, with which the side of the stop engages.

The means of operating. the stop may also be varied. In Figs. II, III, VI, and VII a thumb-piece, 12, is made to project from the stop, so that the latter may be shifted by direct application of the hand to said thumb-piece. In Fig. IV, I have shown a rod, 13, pivotedto the lower end of the stop and projecting up through the frame of the machine in rear of the carriage. In this form a spring, 14, may be employed for forcing a ratchet-face, 15, on the rod 13 over against a toothed or roughened surface of the aperture of the frame, so as to fix the rod to any set position.

In Fig. V, I have shown the lower end of the stop connected by rod 16 with the rear end of a key, 17, which projects forward to a convenient point for operation at the front of the machine or key-board. The key may be fulcrumed at 18, and provided with a spring, 19, on either side of its fulcrum, to return it to one or other of its extreme positions.

The combined movement of the pawls 1 2 transverse of the feed-rack may be allowed for by making a loose connection, 20.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. The combination, with the movable feedpawl, of an adjustable dog or stop mounted on thefixed feed-pawl, setting the limit of movement of the movable feed-pawlfor spac- I ing between letters.

2. The combination, with the movable feedpawl, of an adjustable dog mounted on the fixed feed-pawl, and aspring for retaining the dog in the position in which it is set.

3. The combination, with the movable feedpawl, of an adjustable dog mounted on the fixed feed-pawl, and means, substantially as shown and described, for shifting and setting the dog.

4. The combination, with a fixed feed-pawl, a movable feed-pawl, and a bracket secured to the fixed feed-pawl, of an adjustable dog mounted on the bracket, and on which the movable feed-pawl bears, means, substantially as described, for shifting the dog, and aspring for holding the dog in the position in which it is set.

5. The combination, with the adjustable dog, of the bracket for supporting the dog in 1)lOX imity to the movable feed-pawl, which consists in a blank or plate having a horizontal bend or projection, and provided with slot 5 and set-screw 6, for securing the bracket to the fixed feed-pawl.

In testimony that I claim the above-described invention I have signed these presents in the presence of two subscribing witnesses.

GEORGE IV. JOHNSTON.

\Vitnesses:

JOHN S. J UREY, N. -WALZ. 

